fix: localization on hana (#354)

for compat with current compiler, we need to set LOCALE and
APPLICATIONUSER

hana/lib/HANAService.js

@@ -67,6 +67,8 @@ class HANAService extends SQLService {
     // REVISIT: required to be compatible with generated views
     if (variables['$valid.from']) variables['VALID-FROM'] = variables['$valid.from']
     if (variables['$valid.to']) variables['VALID-TO'] = variables['$valid.to']
+    if (variables['$user.id']) variables['APPLICATIONUSER'] = variables['$user.id']
+    if (variables['$user.locale']) variables['LOCALE'] = variables['$user.locale']
 
     this.dbc.set(variables)
   }

test/scenarios/bookshop/index.js

@@ -3,3 +3,4 @@ require('./delete.test')
 require('./update.test')
 require('./funcs.test')
 require('./genres.test')
+require('./localization.test')

test/scenarios/bookshop/localization.test.js

@@ -0,0 +1,29 @@
+const cds = require('../../cds.js')
+const bookshop = cds.utils.path.resolve(__dirname, '../../bookshop')
+
+describe('Bookshop - localization', () => {
+  const { expect } = cds.test(bookshop)
+
+  test('expand texts', async () => {
+    const result = await cds.db.read('AdminService.Books', {ID: 201}).columns(c => { c.ID, c.title, c.texts(t => {t.locale, t.title})})
+    expect(result.texts).to.deep.include({locale: 'de', title: 'Sturmhöhe'})
+  })
+
+  test('locale from context/default', async () => {
+    const default_ = await SELECT.localized.from('AdminService.Books', {ID: 201}).columns('ID', 'title')
+    expect(default_.title).to.be.eq('Wuthering Heights')
+
+    await cds.tx({ locale: 'de' }, async (tx) => {
+      const de = await tx.run(SELECT.localized.from('AdminService.Books', {ID: 201}).columns('ID', 'title'))
+      expect(de.title).to.be.eq('Sturmhöhe')
+    })
+  })
+
+  test('insert texts', async () => {
+    await cds.insert({ ID: 201, locale: 'es', title: 'Cumbres borrascosas'}).into`AdminService.Books[ID=201].texts`
+    await cds.tx({ locale: 'es' }, async (tx) => {
+      const es = await tx.run(SELECT.localized.from('AdminService.Books', {ID: 201}).columns('ID', 'title'))
+      expect(es.title).to.be.eq('Cumbres borrascosas')
+    })
+  })
+})